Search Results for author: Yixiang Shan

Found 3 papers, 0 papers with code

Contrastive Diffuser: Planning Towards High Return States via Contrastive Learning

no code implementations5 Feb 2024 Yixiang Shan, Zhengbang Zhu, Ting Long, Qifan Liang, Yi Chang, Weinan Zhang, Liang Yin

The performance of offline reinforcement learning (RL) is sensitive to the proportion of high-return trajectories in the offline dataset.

Contrastive Learning D4RL +2

DiffStitch: Boosting Offline Reinforcement Learning with Diffusion-based Trajectory Stitching

no code implementations4 Feb 2024 Guanghe Li, Yixiang Shan, Zhengbang Zhu, Ting Long, Weinan Zhang

In offline reinforcement learning (RL), the performance of the learned policy highly depends on the quality of offline datasets.

D4RL Data Augmentation +4

Learning the Network of Graphs for Graph Neural Networks

no code implementations8 Oct 2022 Yixiang Shan, Jielong Yang, Xing Liu, Yixing Gao, Hechang Chen, Shuzhi Sam Ge

Our model solves the first issue by simultaneously learning multiple relation graphs of data samples as well as a relation network of graphs, and solves the second and the third issue by selecting important data features as well as important data sample relations.

Graph Neural Network Relation +1

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